Tips

Once you beat Normal Campaign once, you can use three of the 'Star' Forces with any character Rank 1 or higher. The three forces are Eagle Eye (+2 vison), Gear Head (+2 base repair), and Conquerer (+2 Capture).

When you make it to mission 18 (Muck Amok) save on day 1, and continue your game on a different save. Finish the mission many times to get easy points and exp. If you destroy the minicannon and pipe seam, you get a little extra points. If you route Koal, getting 40 points from each oozium, you can get 1,000 points and exp.

Reach Rank 10 with any CO to unlock an alternate costume for that CO. To use it, first obtain their extra colours from Hachi, then go into the CO Design Mode. Select the CO you want, and select the icon below the circular icons to select their alternate costume.

to get all of the goals in the history thingie just go to the map maker and make a map thats easy to do that in. for example: one of the goals is "load 30 units", so you could just make a map with a line of units next to a line of apcs and just load them in (you could make your enemies base surrounded by a bunch of your guys or something so you easily win each time). I dont know if completeing all of the history thingies unlocks anything but o well

The best thing to do here is to have Eagle as the CO for the Green Earth troops. Now you can simply sneak up the side with a few bombers (and fighters to protect them against other fighters) and take out the large crystal with ease. You won't get as good a ranking, but it gets the mission over with quickly.

By having AW1 or AW2 in your DS at the same time as Duel Strike, you can unlock new stuff at the the Hatchi's Shop! With AW1 you get Advance Warpaper, Hatchi's Land, and Nell's Land. With AW2 you get Advance Warpaper 2, Lash's Land, and Sturm's Land. All can be bought for only 1 point.